QuickMedical medical supply company recently celebrated its 20th year in business in Issaquah.

In 1993, Scott Hanna and a couple of friends created the first digital height measuring device, Heightronic 23, to measure height to .01 centimeters. Sales were managed from Hanna’s garage in North Bend.

The company grew so quickly, it was moved to a warehouse in Snoqualmie and then finally a bigger facility in Issaquah.

Changes to the state call-before-you-dig law went into effect Jan. 1, and the updated rules include stiffer penalties, mandatory damage reporting and clearer procedures — even for deep digging in a garden or yard.

The law affects all excavators, including contractors, homeowners and utilities. State lawmakers passed the law in 2011 at the request of the state Utilities and Transportation Commission. Officials said the switch is intended to decrease damage to underground pipelines and utilities.

The most innovative businesses in Issaquah clothe people around the globe, transform garbage into fertilizer, and create productions for local and Broadway audiences.

Issaquah Chamber of Commerce and city leaders announced the Innovation in Issaquah honorees — apparel manufacturer SanMar, WISErg, a manufacturer of fertilizer harvesters, and Village Theatre — at a ceremony and luncheon Thursday.

Leaders at the chamber and City Hall recognized the entrepreneurs’ accomplishments through the Innovation in Issaquah contest, a showcase for local businesses offering unique services.

Top Pot Hand-Forged Doughnuts plans to open a drive-thru Issaquah location as early as next month — a first for the Seattle-based pastry purveyor.

Cofounder Mark Klebeck said Top Pot intends to upgrade Rowley Properties’ existing building at 1235 N.W. Maple St. — a round structure most recently occupied by Mondo’s Espresso — near the Issaquah Transit Center.

The iconic structure’s Mid-Century Modern design and proximity to the transit hub appealed to the Klebecks.

Victor Zou (right), the creator of Sukugo, poses with his wife and business partner Lucy Lu and a Sukugo game board, in their Issaquah home. Sukugo is a family-friendly board game that can help develop a child’s math skills, Zou said. By Christina Corrales-Toy

Issaquah resident Victor Zou first tried sudoku on a long bus ride while headed for a company retreat. He was intrigued by the numbered logic puzzle, but put off by the solitary and bland nature of the game. Sudoku, he said, could be so much more.

So, Zou set out to create a product that could be the centerpiece of family game night and challenge kids and adults alike to use both sides of their brains. The result is Sukugo, a versatile and colorful sudoku board game that develops users’ logic and reasoning.

“Our left brain is really good at math, numbers and logical reasoning, but our right brain is more about color and creative thinking, so I wanted to combine these two together to really make an enjoyable game,” he said.